678548769 has 8 divisors (see below), whose sum is σ = 905010432. Its totient is φ = 452226480.

The previous prime is 678548749. The next prime is 678548789. The reversal of 678548769 is 967845876.

It is an interprime number because it is at equal distance from previous prime (678548749) and next prime (678548789).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 678548769 - 2²⁰ = 677500193 is a prime.

It is a super-2 number, since 2×678548769² = 920856863822830722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (678548719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22897 + ... + 43374.

It is an arithmetic number, because the mean of its divisors is an integer number (113126304).

Almost surely, 2^678548769 is an apocalyptic number.

It is an amenable number.

678548769 is a deficient number, since it is larger than the sum of its proper divisors (226461663).

678548769 is a wasteful number, since it uses less digits than its factorization.

678548769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69687.

The product of its digits is 20321280, while the sum is 60.

The square root of 678548769 is about 26048.9686744024. The cubic root of 678548769 is about 878.7399187311.

The spelling of 678548769 in words is "six hundred seventy-eight million, five hundred forty-eight thousand, seven hundred sixty-nine".